Company lists · Data refreshed September 2026
Top 25 Tax collection software companies based in the United States
RevenueBase identified 113 tax collection software companies headquartered in the United States as of September 2026 and tracks 14,190 professional contacts across them, including 8,143 with verified work emails. Chicago is the largest hub.
This list covers tax collection software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest tax collection software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,089 contacts → | ||||
Strong evidence “Ryan, an award-winning global tax services and software provider, is the largest Firm in the world dedicated exclusively to business taxes.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,363 contacts → | ||||
Partial evidence “For 25+ years, we’ve transformed the way government agencies serve their communities, providing software that delivers superior customer experiences, greater flexibility, and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,068 contacts → | ||||
Partial evidence “Vertex is the Decision-to-Defense™ global indirect tax and compliance company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 561 contacts → | ||||
Strong evidence “Drake Software, a private company founded in 1977, provides software solutions to over tax and accounting firms that file more than 40 million tax returns every year.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 454 contacts → | ||||
Strong evidence “Grant Street Group specializes in cloud-based government solutions for tax collection, e-payments, and auctions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 302 contacts → | ||||
Partial evidence “TTI’s flagship product, Tax Series, is an all-inclusive SaaS solution that can handle all aspects of U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 136 contacts → | ||||
Strong evidence “CrossLink Professional Tax Solutions (CPTS) is a leading provider of professional tax software solutions for professional tax preparers across the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 115 contacts → | ||||
Strong evidence “GovOS is a leading provider of transaction and compliance software for state and local governments to streamline property, licensing, and tax interactions with businesses and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 114 contacts → | ||||
Partial evidence “Aumentum Technologies simplifies the property tax management life cycle for governments around the world empowering them to focus on what matters most – improving funding for…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 105 contacts → | ||||
Partial evidence “Kintsugi is automating sales tax for every company globally.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 79 contacts → | ||||
Partial evidence “Tax.com™ solutions are powered by the insights and ingenuity of some of the most renowned business tax professionals at Ryan whose experience and expertise form the bedrock on…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 79 contacts → | ||||
Partial evidence “april partners with wealth management firms, banks, and SMB platforms to embed tax filing, planning, and insights directly into the financial platforms people use every day to…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 74 contacts → | ||||
Indirect evidence “XIT Solutions Inc, is a decade old startup with presence in US, Canada & India.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 65 contacts → | ||||
Partial evidence “Orbitax empowers tax professionals with intelligent, AI-driven solutions that unify processes, simplify compliance, and empower meaningful collaboration.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 62 contacts → | ||||
Partial evidence “We help property tax and licensing professionals simplify their work and save them time, so they can focus on core business functions and their bottom line.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 62 contacts → | ||||
Indirect evidence “Manatron is now Thomson Reuters Aumentum.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 58 contacts → | ||||
Partial evidence “CereTax is the first tax automation solution built to take advantage of the countless technological advancements over the last decade and engineered in a way that truly transforms…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 57 contacts → | ||||
Partial evidence “TTR, The Tax Research Company, provides everything sales, use, and transaction tax-related.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 55 contacts → | ||||
Partial evidence “Anybill is the leading provider of tax payment services, focusing exclusively on automating tax payments for our clients and partners.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 45 contacts → | ||||
Strong evidence “Berkheimer pioneered tax collection automation in 1936 and its legacy continues to shine as a leader in tax collection and related services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 36 contacts → | ||||
Partial evidence “Purpose-built, public sector payments software, now part of Euna Solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 32 contacts → | ||||
Indirect evidence “Discover the power of seamless financial management with System Innovators, your trusted partner in local government solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 26 contacts → | ||||
Partial evidence “Government Brands is the preferred partner for government software solutions and integrated payments.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 26 contacts → | ||||
Partial evidence “Build a More Successful and Productive Tax Office with TaxOffice 2004 TaxOffice 2004 for Windows is designed for forward-thinking Tax Offices who are committed to significantly…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 23 contacts → | ||||
Partial evidence “We implement tax engines and build tools to make it easier to manage your tax engine.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: tax collection software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names tax collection software companies.
- Partial evidence
- Its own public description names part of tax collection software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name tax collection software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 113 tax collection software companies based in the United States
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Tax collection software companies based in the United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 113 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among tax collection software companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “tax collection software companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names tax collection software companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among tax collection software companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 8,143 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names tax collection software companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many tax collection software companies are there based in the United States?
RevenueBase identified 113 tax collection software companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
RYAN, headquartered in Dallas, tops this list with the largest team on record.
Which city has the most tax collection software companies?
Chicago leads with 3 headquartered companies, followed by Columbus (3) and Dallas (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 8,143 verified decision-maker contacts tracked across these 113 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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